Manganese 20 mg by Wonder Laboratories — Ingredients, Evidence & Safety

Product Label

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Safety Alerts

⚠️ Manganese: 20mg is 1.8× the Tolerable Upper Intake Level (11mg)

The safety score is low because the amount of manganese in this supplement is nearly twice the recommended maximum daily limit.

Label Data

1 Tablet(s) Serving Size

Mineral Product Type

0% Evidence Coverage

Supplement Facts — Evidence Check

Manganese

20 mg (1000% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 1.8× (UL: 11 mg) 📚 8 studies — no high-quality reviews

RDA 2.3mg This product: 20mg UL 11mg

Other Ingredients

Calcium Carbonate Vegetable Cellulose L-Glycine Stearic Acid Silica Vegetable Magnesium Stearate

Label Claims — Verification

❓ Nutrient

❓ All Other

All Other (100% of products) Structure/Function (74% of products) Nutrient (37% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free

Product Information

📋 Directions for Use

Directions: As a dietary supplement, take 1 tablet three times daily.

⚠️ Warnings & Precautions

Tamper evident: Do not use this product if imprinted foil seal under cap is broken or missing.

Keep out of reach of children.

Caution: If you are pregnant or nursing, consult your physician before taking this product.

🧪 Formulation Notes

Mfg. in an FDA Registered Facility using Good Manufacturing Practices (GMPs)

Conforms to USP <2091> for weight. Meets USP <2040> disintegration for maximum bioavailability.

Amino acid chelated

Gluten free

Made in USA

Additional Information

Keep tightly closed. Store at room temperature: 59 degrees - 86 degrees F (15 degrees to 30 degrees C).

Formula 139

Product Details

DSLD Entry Date 2022-01-22

Product Type Mineral

Form Tablet or Pill

Brand Wonder Laboratories

DSLD ID 262643

Data Updated 2026-04-11

Research Evidence

11 Research Sources

47 Avg Quality Score

7 Rct

2 Meta Analysis

1 Regulatory Source

C Trace elements and Alzheimer dementia in population-based studies: A bibliometric and meta-analysis

Meta Analysis Environmental pollution (Barking, Essex : 1987) 2023

PubMed DOI

C Proteins involved in iron metabolism in beef cattle are affected by copper deficiency in combination with high dietary manganese, but not by copper deficiency alone

Rct Journal of animal science 2010

PubMed DOI

C Reducing mineral usage in feedlot diets for Nellore cattle: II. Impacts of calcium, phosphorus, copper, manganese, and zinc contents on intake, performance, and liver and bone status

Rct Journal of animal science 2017

PubMed DOI

C Copper, Ceruloplasmin, Zinc, and Manganese Levels in Brain and Biological Fluids from Parkinson's Disease Patients: Systematic Review and Meta-Analysis

Meta Analysis Cells 2026

PubMed DOI

C Risedronate reverses bone loss in postmenopausal women with low bone mass: results from a multinational, double-blind, placebo-controlled trial. BMD-MN Study Group

Rct The Journal of clinical endocrinology and metabolism 2000

PubMed

C Dietary Reference Intakes: Manganese

Regulatory Source IOM/NAM Dietary Reference Intakes 2000

C Vitamins and minerals intake adequacy in hematopoietic stem cell transplant: results of a randomized controlled trial.

Rct Bone marrow transplantation

PubMed DOI

C Collagen Peptides, in Association with Vitamin C, Sodium Hyaluronate, Manganese and Copper, as Part of the Rehabilitation Project in the Treatment of Chronic Low Back Pain.

Rct Endocrine, metabolic & immune disorders drug targets

PubMed DOI

C Glucosamine, chondroitin, and manganese ascorbate for degenerative joint disease of the knee or low back: a randomized, double-blind, placebo-controlled pilot study

Rct Military medicine 1999

PubMed

C Effects of a cream containing madecassoside, 5% panthenol, and copper-zinc-manganese on improving postlaser resurfacing wound healing: A split-face, randomized trial.

Rct Dermatologic therapy

PubMed DOI

View all evidence for Manganese →